Do not swallow the cause exception when repository is not found

When a repository is not found during the ApplyObject, the source
exception should be used as cause and now swallowed.

Change-Id: I40ecbc69310669c5960d19a4beaa8df25bb84de7

src/main/java/com/googlesource/gerrit/plugins/replication/pull/fetch/ApplyObject.java

diff --git a/src/main/java/com/googlesource/gerrit/plugins/replication/pull/fetch/ApplyObject.java b/src/main/java/com/googlesource/gerrit/plugins/replication/pull/fetch/ApplyObject.java
index 5a4c92f..dc90c7f 100644
--- a/src/main/java/com/googlesource/gerrit/plugins/replication/pull/fetch/ApplyObject.java
+++ b/src/main/java/com/googlesource/gerrit/plugins/replication/pull/fetch/ApplyObject.java
@@ -94,7 +94,7 @@
         return new RefUpdateState(refSpec.getSource(), result);
       }
     } catch (RepositoryNotFoundException e) {
-      throw new ResourceNotFoundException(IdString.fromDecoded(name.get()));
+      throw new ResourceNotFoundException(IdString.fromDecoded(name.get()), e);
     }
   }
 }